[Spock]: “Interesting. You Earth people glorify organized violence for 40 centuries, but you imprison those who employ it privately.”
[Dr. McCoy]: “And, of course, your people found an answer?”
[Spock]: “We disposed of emotion, Doctor. Where there is no emotion, there is no motive for violence.”

[Spock]: “Has it occurred to you that there is a certain inefficiency in constantly questioning me on things you’ve already made up your mind about?”
[Captain Kirk]: “It gives me emotional security.”
[Spock]: “A very interesting game, this poker.”